Bad Piggies Tusk ‘Til Dawn Level 5-18 can be 3-starred using a single contraption. Use two boxes with TNT on the left side. The fan should also be placed on the left, and use both balloons to ascend to the top star box. Fall to the lower star box, then blast the TNT to shoot Freckles forward!
If you have a different strategy for completing this level feel free to leave a comment below.